Hide a folder on mobile navigation

https://theprojecttwins.squarespace.com

I would like to hide the info folder on mobile navigation and just show Profile and Contact under the rest of the navigation items.

Thanks
James

Im thinking the easiest option would be to add 2 links to the navigation to 'Profile' and 'Contact' and then hide them on desktop view and hide the entire 'Info' folder on mobile view. 

Anyone knows the CSS to do that? or is there a better/easier way?

Thanks for the reply. I managed to figure out the code already.